Saved Bookmarks
| 1. |
The surface energy of a liquid drop is `E`. It is sprayed into `1000` equal droplets. Then its surface energy becomesA. 1000 EB. 100 EC. 10 ED. E |
|
Answer» Correct Answer - C Final surface energy `= 1000 xx 4 pi r^(2) sigma` Initial surface energy, `E = 4 pi R^(2) sigma` Again, `(4)/(3) pi R^(3) = 1000 xx (4)/(3) pi r^(2)` or `R = 10 r` Now, final energy `1000 xx 4 pi r^(2) sigma = 10 xx 4 pi R^(2) sigma = 10 E`. |
|